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From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9730) Storage ID update does not happen when there is a layout change
Date Mon, 01 Feb 2016 22:51:39 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9730?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15127193#comment-15127193
] 

Kihwal Lee commented on HDFS-9730:
----------------------------------

bq. I am not quite sure I understand why the current unit tests are actually passing
The datanode layout version(-56) hasn't changed in trunk or branch-2.7. So the test won't
go through the layout update path. If the test case used an older layout version, it would
have failed. HDFS-7575 was created with the test resource containing datanode layout version
-56. 

> Storage ID update does not happen when there is a layout change
> ---------------------------------------------------------------
>
>                 Key: HDFS-9730
>                 URL: https://issues.apache.org/jira/browse/HDFS-9730
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Kihwal Lee
>
> HDFS-9654 will cause test failures when we increment the datanode layout version next
time.
> {noformat}
> TestDatanodeStartupFixesLegacyStorageIDs#testUpgradeFrom22via26FixesStorageIDs
> TestDatanodeStartupFixesLegacyStorageIDs#testUpgradeFrom22FixesStorageIDs
> {noformat}
> This is because createStorageID() is no longer called when it goes through the layout
upgrade path. 



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